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2019 - 2021 Ram Cummins 2500 3500 4500 5500 | EFI Live

2019 - 2021 Ram Cummins 2500 3500 4500 5500 | EFI Live

Regular price $700.00
Regular price Sale price $700.00
Sale Sold out
Tax included.
Select Tune File
Select Device and License
Select Physical Switch
Tuning Benefits:
  • Preloaded Device
  • Off Road Tuning Capable (EGR/DPF remove)
  • Increase in Mileage
  • Increase in Horsepower
  • Increase in Torque

Compatible Vehicles:

  • 2019 - 2021 Ram Cummins 2500 3500 4500 5500
    • Pickups and Cab Chassis/Incomplete Trucks
Compatible Transmissions:
  • Auto 68RFE (Found in auto based 2500 Pickups)
  • Auto Aisin (Found in auto based 3500/4500/5500 pickups and Cab Chassis / Incomplete Trucks)
  • Manual G56


  • 2018+ Trucks REQUIRE a BYPASS CABLE to be installed in order to flash the truck (simple installation).
  • All vehicle and transmission tuning require an EFI Live AutoCal Device + Licensing for deployment, unless the individual already has an EFI Live AutoCal Device and the appropriate Licensing.
  • Currently for this platform we are only accepting Aftermarket Tuning Modifications for an Aftermarket Turbo.

Tune Power Levels

  • Stock (Optimized)
  • 30HP (Heavy Tow)
  • 80HP (Light Tow -12k Lbs and under)
  • 150HP
  • 180HP
  • 200HP

CSP4 Tune comes with Switchable Tuning for the 2019 - 2021 Cummins 2500/3500/4500/5500, the CSP4 Tune comes with 4 Switchable Tune Power Levels (30HP, 80HP, 150HP, 180HP).  With the CSP4 Tune user(s) can choose between power levels on the EFI Live AutoCal Device or by installing a Cummins CSP4/CSP5 OBDII Passthrough Switch for selection, it is HIGHLY recommended to deploy with a physical Cummins CSP4/CSP5 OBDII Passthrough Switch for ease of Tune selection.

Single HP Tune comes with a Single HP Tune, select your preferred HP Power Level in the Select Single Tune HP Power Level field.

    Transmission Tuning (Available Only on 68RFE Transmission)
    • Earlier Converter Lockup
    • Increased Line Pressure
    • New Shift Strategy to Keep From Sluggish Shifting
    • Earlier Downshift with Less Throttle Input
    • Torque Management
    How to tell the difference in auto transmissions
    • 68RFE - Transmission pan looks like a turtle shell. The dipstick is on the passenger side of the engine bay.
    • Aisin - Transmission pan is flat and says Aisin on the side of it. The dipstick is on the driver side of the engine bay.

    Cummins CSP4/CSP5 Pass Through Switch:

    CSP4/5 pass through switch allows you to change power levels on the go, or commonly referred to "Switch on The Fly". They do NOT require you to stop the truck and wait 5 minutes for the truck to re-flash, you just turn the rotary dial to the position of the tune you want while the truck is running or driving down the road and carry on. These switches plug into the OBDII port and have a pass through port allowing you to plug something else with a OBDII plug into it, such as a Monitor.


    All EFI Live AutoCal devices come preloaded with the customers specific tune to avoid the hassle of having to download EFI live and load the tune yourself. Detailed instructions come with every tune from how to download a simple file onto your AutoCal, to how to load the tune onto your vehicle. If you still need assistance, don't sweat it as world class tech support is offered on ALL our purchases!


    How to get authentication code and serial number for license

    • CLICK HERE for instructions off of EFI Live's website
    View full details